| Message ID | 20170302160211.30451-4-kolga@netapp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/read_write.c b/fs/read_write.c index 75084cd..00161bd 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1543,7 +1543,8 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in, * Try cloning first, this is supported by more file systems, and * more efficient if both clone and copy are supported (e.g. NFS). */ - if (file_in->f_op->clone_file_range) { + if (inode_in->i_sb == inode_out->i_sb && + file_in->f_op->clone_file_range) { ret = file_in->f_op->clone_file_range(file_in, pos_in, file_out, pos_out, len); if (ret == 0) {
Only try clone_file_range if superblocks are the same. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> --- fs/read_write.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)